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Geographical Ethernet Access
Who can use the service?
GEA is a level 2 connectivity service, using Ethernet VLAN-based technology, mainly aimed at Operators active in the Business market: the service is typically used to connect the Operator's POPs to their end users' premises or to set up direct connections between the premises of the operator's end users.
Description of the service
The GEA service provides level 2 any-to-any connectivity between the Network Termination Sites, hereinafter indicated as POI (Point of Interoperability) or NTP (Network Termination Point), respectively corresponding to the Operator's POP and the premises of its end user, through Ethernet delivery interfaces.
The speeds provided range from 10 Mbit/s to 100 Mbit/s in 10 Mbit/s steps, and multiple speeds of 100 Mbit/s are also provided.
The service model used to set up GEA is based on the 802.1Q tunnelling function which provides for the use of a external network VLAN (S-VLAN predefined by TIM) on which the multiple customer VLANs (called C-VLANs) are transported.
By choosing the appropriate C-VLANs at the various premises, the customer may independently segregate the Ethernet traffic to create the logical topology of connectivity that best suits its needs. In particular, the customer may set up Hub&Spoke connectivity collecting several C-VLANs at one site that will operate as a Hub and not configuring the same C-VLAN between any two Spoke sites. Or it may set up any-to-any connectivity, configuring the C-VLANs themselves within the same S-VLAN between all the sites.
Only the S-VLAN ID, which may contain within it a multitude of C-VLAN IDs linked to the various applications transported but not visible to TIM, is visible to the TIM network. The GEA service is provided by means of L2 switch network devices located at some TIM exchanges (hereinafter called “GEA Nodes”), which perform collection, concentration and management functions for the traffic that originated at the network termination sites.
The service is currently available in all the Italian provinces (hereinafter “GEA provinces”), within which there is an urban area where GEA nodes are installed.
Access to the service from both NTPs and POIs is provided by L2 switch remote devices installed and operated by TIM at the sites of the NTPs and POIs themselves.
The traffic related to each S-VLAN can be delivered locally to the Operator's network in the same GEA province or in another GEA province, at a Point of Interoperability, serving as an interface between the TIM network and that of the customer.
There are 3 types of service known as: GEA LAN, GEA LINE and GEA IPG@TE.
GEA LAN allows provincial connections to be set up between NTPs and POIs located within the same GEA province and permits any-to-any mode communication between all the above sites related to the same connection (S-VLAN).
Each GEA LAN connection creates a private virtual network (“external network VLAN” or generically “VLAN”) between all the NTPs and POIs related to it, the implementation of which is visible to the customer as it does not influence the configurations of the latter's equipment in any way.
Within the same GEA province, the customer can activate more than one GEA LAN connection, each of which will be associated with a specific external network S-VLAN, allowing a clear separation between the traffic of each private virtual network.
GEA LAN is made up of a series of elements, known as Service Components, which can be ordered by the customer:
The “NTP Access” Service Component is typically located at a termination site corresponding to the site of the Operator's end user where each individual S-VLAN is terminated on a port on the Customer side of the remote device installed at the same site. An NTP will therefore have as many NTP Access Components as the number of connections terminating on it; each NTP Access Component is terminated on a dedicated port of the remote device. The remote device is connected to the TIM network via a fibre optic carrier and 1Gbit/s optical interfaces, with transmission solutions defined by TIM based on the project and visible to the customer. There are various options to connect the customer's NTP in Fibre Optic:
In the Plus and Ultra options, at the request of the customer, TIM can devise and prepare solutions with greater reliability through GEA Connection Node redundancy and/or path redundancy.
The “Physical PoI Access” Service Component is located at a network termination point, corresponding with a POP of the Operator, co-located in a TIM Exchange facility with a GEA node (or optionally not co-located) and corresponding with the termination of each individual S-VLAN on a port on the Customer side of the remote device located in the same POP. The delivery of several S-VLANs on the same Port of the remote device (e-NNI Delivery mode) is also possible. The bandwidth capacity configurable on the Physical POI Access Component ranges from 10Mbit/s to 1 Gbit/s; the delivery interface is FE 10/100 Mbit/s or GbE 100/1000Mbit/s, depending on the requested bandwidth capacity.
The “Virtual PoI Access” Service Component allows traffic to be delivered to a different province from that in which the traffic is generated.
TIM uses the Virtual POI to bundle the traffic originating from all the NTPs related to the same GEA LAN connection and transports it, by geographical transmission extension, to a specific Physical POI of the Customer; the traffic is then delivered to the Customer on a dedicated port of the remote device of the same Physical POI.
The Virtual PoI Access Component differs according to the requested bandwidth capacity, which ranges from 30 to 100Mbit/s, a capacity that will be configured by TIM both on the geographical transport component and on the port of the Physical POI where the traffic is delivered.
GEA LINE permits the setting up of point-to-point connections between an NTP and a Physical POI located in different GEA provinces. This configuration does not include multi-point connections communicating in any-to-any mode.
GEA LINE sets up a virtual private network between two network termination sites so they are visible to the Customer, who may "package" its customer VLANs (C-VLANs) in the TIM VLANs.
GEA LAN is made up of a series of elements, known as Service Components, which can be ordered by the customer exclusively in integrated mode:
GEA IP G@tE
Gea IP GATE permits the NTP of the end user to be connected directly to the Internet, creating Level 2 connectivity between the premises of the customer and TIM's PE Router which provides access to the Internet. This service profile works in synergy with the commercial offer known as “IP G@TE”.
Should the Operator wish for a connection to be delivered on its POP at a TIM exchange, it must have signed a Co-location agreement.
The connections must be preceded by a feasibility study.
The pricing structure includes an activation fee and a monthly charge which depends on the bandwidth, the access set-up method and the type of service provided.
For more technical-sales information on this service, please contact your Account Manager.
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The service is not subject to regulations and is intended exclusively for: